After struggling to find a location to fill my CO2 tank, I found Jason's Dry Ice. Only $11 to fill my 10 lb tank. Or maybe it's a 15 lb tank? Can't recall, but they fill in-site every day, and if you're in a rush, for an extra $15, they'll fill while you wait.

Nice guys, here is the info:

 

Here is the receipt!

 

Here is the location.